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 A127669 Number of numbers mapped to A127668(n) with the map described there. 1
 1, 1, 2, 1, 2, 1, 3, 2, 2, 1, 3, 1, 2, 2, 5, 1, 3, 1, 3, 2, 2, 1, 5, 2, 2, 3, 3, 1, 3, 1, 7, 2, 2, 2, 5, 1, 2, 2, 5, 1, 3, 1, 3, 3, 2, 1, 7, 2, 3, 2, 3, 1, 5, 2, 5, 2, 2, 1, 5, 1, 2, 3, 11, 2, 3, 1, 3, 2, 3, 1, 7, 1, 2, 3, 3, 2, 3, 1, 7, 5, 2, 1, 5, 2, 2, 2, 5, 1, 5, 2, 3, 2, 2, 2, 11, 1, 3, 3, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,3 COMMENTS This is not A008481(n), n>=2, which starts similarly, but differs, beginning with n=24. LINKS Table of n, a(n) for n=2..100. FORMULA a(n)<=pa(Length( A127668(n))), n>=2. Length gives the number of digits and pa(k):=A000041(k) (partition numbers). (It was originally claimed that this is equality, but that is not correct. - Franklin T. Adams-Watters, May 21 2014) EXAMPLE a(4)=2 because two numbers are mapped to 11= A127668(4), namely n=p(1)*p(1)=4 and n=p(11)=31. p(n)=A000041(n) (partition numbers). CROSSREFS Cf. a(24)=5 but A008481(24)=4. The five numbers mapped to A127668(24)= 2111 are: 18433, 2594, 2263, 292, 24. Sequence in context: A329617 A008481 A318473 * A323436 A056692 A331600 Adjacent sequences: A127666 A127667 A127668 * A127670 A127671 A127672 KEYWORD nonn,easy,base AUTHOR Wolfdieter Lang Jan 23 2007 EXTENSIONS Edited by Franklin T. Adams-Watters, May 21 2014 STATUS approved

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Last modified August 8 12:20 EDT 2024. Contains 375021 sequences. (Running on oeis4.)